'midi in" project....

High-Tec , have you seen this thread? http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1187962258

Yes but they are all talking about an external piece of hardware wich I don't have.

I'm thinking very radical: an arduino hooks up via USB to the computer.
My Midi keyboard does to!

Is it possible to make an internal connection via coding?